When in September are most 5K races held?
The busiest weekend in Michigan is September 11 and September 12, with 3 of them, 2 of those on Sunday, September 12. One more falls on a weekday, which is worth knowing if you are traveling for it.
Race calendar · September 2027 · Michigan
5K Races in Michigan in September 2027
Every 5K in Michigan in September 2027, all 12 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
What the field actually runs
September 5K Races, By the Numbers
39:40Median finish time
23:50Median winning time
89Median field size
8September 5K races with published results
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Nov 12, 2026.
When in September
The September Race Weekends
5K races are not spread evenly across September. Here is how the calendar actually falls, weekend by weekend, which is the part worth knowing before you book a trip or plan a taper around one.
By the numbers
The Biggest Field
The largest field of any September 5K in Michigan, from the most recent published results.
Michigan 5K Races by City in September
All 5K Runs in Michigan in September
12 total Wed, Sep 1, 2027RSU Test Race 2 Flint, MIFrom $5Register Sat, Sep 4, 2027Golden Harvest Half Marathon & 5k/10k - Ann Arbor Ypsilanti, MIFrom $30Details Sun, Sep 5, 2027Golden Harvest Half Marathon & 5K/10K - Lansing Lansing, MIFrom $31Details Sat, Sep 11, 2027Strides for Recovery 5k Port Huron, MIFrom $15Details Sun, Sep 12, 2027PEDALS Cannonsburg, MIRegistration opens Dec 31From $50Details Sun, Sep 12, 2027THE ROOTED HALF MARATHON Lake Orion, MIRegistration opens Dec 1From $40Details Sat, Sep 18, 2027Escanaba Fall Classic Half Marathon Escanaba, MIFrom $25Details Sun, Sep 19, 2027Detroit Women's Half Marathon Detroit, MIFrom $46Details Sun, Sep 19, 2027Golden Harvest Half Marathon & 5K/10K - Grand Rapids Grand Rapids, MIFrom $32Details Sat, Sep 25, 2027Campfire 5K Almont, MIFrom $30Details Sat, Sep 25, 2027Baby Steps 5k Run/Walk Kalamazoo Kalamazoo, MIFrom $30Details Sat, Sep 25, 2027Coffee Classic Run White Lake, MIFrom $30Details
Common Questions About Running a September 5K in Michigan
What is a good 5K time?
Across the 8 of these September 5K races with published results from past editions, the median finisher ran 39:40, and the median winning time was 23:50. So anything under 39:40 puts you in the faster half of a typical field. That is the middle of these RunSignup fields, walkers and charity entrants included, not a national average.
How big is a typical September 5K field?
The median one finished 89 runners, across the 8 of these September 5K races with published results from past editions. Most are far smaller than the big-city events people picture, which means less crowding at the start and a friendlier field, with a last recorded finisher at 1:07:32.
Are there trail 5K races in Michigan in September?
Yes, 3 races around Michigan get you off the pavement: 2 are trail races, and 1 mixes road and trail.